22112287 has 2 divisors, whose sum is σ = 22112288. Its totient is φ = 22112286.

The previous prime is 22112281. The next prime is 22112309. The reversal of 22112287 is 78221122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22112287 - 2⁷ = 22112159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22112281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056143 + 11056144.

It is an arithmetic number, because the mean of its divisors is an integer number (11056144).

Almost surely, 2^22112287 is an apocalyptic number.

22112287 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112287 is an equidigital number, since it uses as much as digits as its factorization.

22112287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 25.

The square root of 22112287 is about 4702.3703597228. The cubic root of 22112287 is about 280.6798403578.

The spelling of 22112287 in words is "twenty-two million, one hundred twelve thousand, two hundred eighty-seven".